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Saturday, November 14, 2026Nov 14

Fact Check: Most GOP presidential candidates flunk climate science

EDITOR’S NOTE: This story, assessing political claims that take shortcuts with the facts or don’t tell the full story, is part of an occasional series focusing on the science, the costs and the challenges of climate change around the world ahead of a summit in Paris.

WASHINGTON – When it comes to climate science, two of the three Democratic presidential candidates are A students, while most of the Republican contenders are flunking, according to a panel of scientists who reviewed candidates’ comments.

At the request of The Associated Press, eight climate and biological scientists graded for scientific accuracy what a dozen top candidates said in debates, interviews and tweets, using a 0 to 100 scale.

To try to eliminate possible bias, the candidates’ comments were stripped of names and given randomly generated numbers, so the professors would not know who made each statement they were grading. Also, the scientists who did the grading were chosen by professional scientific societies.

Former Secretary of State Hillary Rodham Clinton had the highest average score at 94. Three scientists did not assign former Maryland Gov. Martin O’Malley a score, saying his statements mostly were about policy, which they could not grade, instead of checkable science.